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Finding the Fourth Proportional to 1,034.34, 1,551.47 and 417.89

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Solution

The fourth proportional to 1,034.34, 1,551.47 and 417.89 is: 626.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.34 : 1,551.47 = 417.89 : x
  2. Step 2: Convert to fraction form
    1,034.34/1,551.47 = 417.89/x
  3. Step 3: Cross multiply
    1,034.34x = 1,551.47 × 417.89
  4. Step 4: Simplify right side
    1,034.34x = 648,333.95
  5. Step 5: Solve for x
    x = 648,333.95/1,034.34
  6. Step 6: Final answer
    x = 626.81

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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.