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Finding the Fourth Proportional to 1,068.92, 1,475.18 and 626.66

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Solution

The fourth proportional to 1,068.92, 1,475.18 and 626.66 is: 864.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.92 : 1,475.18 = 626.66 : x
  2. Step 2: Convert to fraction form
    1,068.92/1,475.18 = 626.66/x
  3. Step 3: Cross multiply
    1,068.92x = 1,475.18 × 626.66
  4. Step 4: Simplify right side
    1,068.92x = 924,436.30
  5. Step 5: Solve for x
    x = 924,436.30/1,068.92
  6. Step 6: Final answer
    x = 864.83

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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.