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Finding the Fourth Proportional to 731.49, 1,009.88 and 483.53

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Solution

The fourth proportional to 731.49, 1,009.88 and 483.53 is: 667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.49 : 1,009.88 = 483.53 : x
  2. Step 2: Convert to fraction form
    731.49/1,009.88 = 483.53/x
  3. Step 3: Cross multiply
    731.49x = 1,009.88 × 483.53
  4. Step 4: Simplify right side
    731.49x = 488,307.38
  5. Step 5: Solve for x
    x = 488,307.38/731.49
  6. Step 6: Final answer
    x = 667.55

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.