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Finding the Fourth Proportional to 1,034.16, 1,551.47 and 417.87

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Solution

The fourth proportional to 1,034.16, 1,551.47 and 417.87 is: 626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.16 : 1,551.47 = 417.87 : x
  2. Step 2: Convert to fraction form
    1,034.16/1,551.47 = 417.87/x
  3. Step 3: Cross multiply
    1,034.16x = 1,551.47 × 417.87
  4. Step 4: Simplify right side
    1,034.16x = 648,310.68
  5. Step 5: Solve for x
    x = 648,310.68/1,034.16
  6. Step 6: Final answer
    x = 626.90

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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.