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Finding the Fourth Proportional to 1,046.10, 1,569.04 and 429.87

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Solution

The fourth proportional to 1,046.10, 1,569.04 and 429.87 is: 644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.10 : 1,569.04 = 429.87 : x
  2. Step 2: Convert to fraction form
    1,046.10/1,569.04 = 429.87/x
  3. Step 3: Cross multiply
    1,046.10x = 1,569.04 × 429.87
  4. Step 4: Simplify right side
    1,046.10x = 674,483.22
  5. Step 5: Solve for x
    x = 674,483.22/1,046.10
  6. Step 6: Final answer
    x = 644.76

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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.