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Finding the Fourth Proportional to 431.33, 595.11 and 291.69

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Solution

The fourth proportional to 431.33, 595.11 and 291.69 is: 402.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.33 : 595.11 = 291.69 : x
  2. Step 2: Convert to fraction form
    431.33/595.11 = 291.69/x
  3. Step 3: Cross multiply
    431.33x = 595.11 × 291.69
  4. Step 4: Simplify right side
    431.33x = 173,587.64
  5. Step 5: Solve for x
    x = 173,587.64/431.33
  6. Step 6: Final answer
    x = 402.45

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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.