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Finding the Fourth Proportional to 595.76, 891.53 and 431.42

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Solution

The fourth proportional to 595.76, 891.53 and 431.42 is: 645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.76 : 891.53 = 431.42 : x
  2. Step 2: Convert to fraction form
    595.76/891.53 = 431.42/x
  3. Step 3: Cross multiply
    595.76x = 891.53 × 431.42
  4. Step 4: Simplify right side
    595.76x = 384,617.26
  5. Step 5: Solve for x
    x = 384,617.26/595.76
  6. Step 6: Final answer
    x = 645.60

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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.