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Finding the Fourth Proportional to 973.76, 1,460.80 and 324.40

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Solution

The fourth proportional to 973.76, 1,460.80 and 324.40 is: 486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.76 : 1,460.80 = 324.40 : x
  2. Step 2: Convert to fraction form
    973.76/1,460.80 = 324.40/x
  3. Step 3: Cross multiply
    973.76x = 1,460.80 × 324.40
  4. Step 4: Simplify right side
    973.76x = 473,883.52
  5. Step 5: Solve for x
    x = 473,883.52/973.76
  6. Step 6: Final answer
    x = 486.65

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Double scale
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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.