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Finding the Fourth Proportional to 1,042.41, 1,437.82 and 649.62

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Solution

The fourth proportional to 1,042.41, 1,437.82 and 649.62 is: 896.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.41 : 1,437.82 = 649.62 : x
  2. Step 2: Convert to fraction form
    1,042.41/1,437.82 = 649.62/x
  3. Step 3: Cross multiply
    1,042.41x = 1,437.82 × 649.62
  4. Step 4: Simplify right side
    1,042.41x = 934,036.63
  5. Step 5: Solve for x
    x = 934,036.63/1,042.41
  6. Step 6: Final answer
    x = 896.04

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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.