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Finding the Fourth Proportional to 882.32, 1,321.36 and 443.01

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Solution

The fourth proportional to 882.32, 1,321.36 and 443.01 is: 663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.32 : 1,321.36 = 443.01 : x
  2. Step 2: Convert to fraction form
    882.32/1,321.36 = 443.01/x
  3. Step 3: Cross multiply
    882.32x = 1,321.36 × 443.01
  4. Step 4: Simplify right side
    882.32x = 585,372.74
  5. Step 5: Solve for x
    x = 585,372.74/882.32
  6. Step 6: Final answer
    x = 663.45

Related Problems

Find fourth proportional to 441.16, 660.68 and 221.50
Half scale
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Double scale
Find fourth proportional to 883.32, 1,322.86 and 444.01
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.