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Finding the Fourth Proportional to 946.78, 1,306.56 and 532.78

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Solution

The fourth proportional to 946.78, 1,306.56 and 532.78 is: 735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.78 : 1,306.56 = 532.78 : x
  2. Step 2: Convert to fraction form
    946.78/1,306.56 = 532.78/x
  3. Step 3: Cross multiply
    946.78x = 1,306.56 × 532.78
  4. Step 4: Simplify right side
    946.78x = 696,109.04
  5. Step 5: Solve for x
    x = 696,109.04/946.78
  6. Step 6: Final answer
    x = 735.24

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Double scale
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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.