Home / 1,046.46-1,569.20-387.88

Finding the Fourth Proportional to 1,046.46, 1,569.20 and 387.88

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Solution

The fourth proportional to 1,046.46, 1,569.20 and 387.88 is: 581.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.46 : 1,569.20 = 387.88 : x
  2. Step 2: Convert to fraction form
    1,046.46/1,569.20 = 387.88/x
  3. Step 3: Cross multiply
    1,046.46x = 1,569.20 × 387.88
  4. Step 4: Simplify right side
    1,046.46x = 608,658.34
  5. Step 5: Solve for x
    x = 608,658.34/1,046.46
  6. Step 6: Final answer
    x = 581.64

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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.