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Finding the Fourth Proportional to 431.46, 595.59 and 291.66

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Solution

The fourth proportional to 431.46, 595.59 and 291.66 is: 402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.46 : 595.59 = 291.66 : x
  2. Step 2: Convert to fraction form
    431.46/595.59 = 291.66/x
  3. Step 3: Cross multiply
    431.46x = 595.59 × 291.66
  4. Step 4: Simplify right side
    431.46x = 173,709.78
  5. Step 5: Solve for x
    x = 173,709.78/431.46
  6. Step 6: Final answer
    x = 402.61

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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.