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Finding the Fourth Proportional to 970.76, 1,455.26 and 483.96

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Solution

The fourth proportional to 970.76, 1,455.26 and 483.96 is: 725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.76 : 1,455.26 = 483.96 : x
  2. Step 2: Convert to fraction form
    970.76/1,455.26 = 483.96/x
  3. Step 3: Cross multiply
    970.76x = 1,455.26 × 483.96
  4. Step 4: Simplify right side
    970.76x = 704,287.63
  5. Step 5: Solve for x
    x = 704,287.63/970.76
  6. Step 6: Final answer
    x = 725.50

Related Problems

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Half scale
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Double scale
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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.