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Finding the Fourth Proportional to 431.53, 595.30 and 263.40

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Solution

The fourth proportional to 431.53, 595.30 and 263.40 is: 363.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.53 : 595.30 = 263.40 : x
  2. Step 2: Convert to fraction form
    431.53/595.30 = 263.40/x
  3. Step 3: Cross multiply
    431.53x = 595.30 × 263.40
  4. Step 4: Simplify right side
    431.53x = 156,802.97
  5. Step 5: Solve for x
    x = 156,802.97/431.53
  6. Step 6: Final answer
    x = 363.37

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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.