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Finding the Fourth Proportional to 929.29, 1,283.29 and 598.30

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Solution

The fourth proportional to 929.29, 1,283.29 and 598.30 is: 826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.29 : 1,283.29 = 598.30 : x
  2. Step 2: Convert to fraction form
    929.29/1,283.29 = 598.30/x
  3. Step 3: Cross multiply
    929.29x = 1,283.29 × 598.30
  4. Step 4: Simplify right side
    929.29x = 767,787.70
  5. Step 5: Solve for x
    x = 767,787.70/929.29
  6. Step 6: Final answer
    x = 826.21

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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.