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Finding the Fourth Proportional to 643.01, 959.18 and 595.76

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Solution

The fourth proportional to 643.01, 959.18 and 595.76 is: 888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.01 : 959.18 = 595.76 : x
  2. Step 2: Convert to fraction form
    643.01/959.18 = 595.76/x
  3. Step 3: Cross multiply
    643.01x = 959.18 × 595.76
  4. Step 4: Simplify right side
    643.01x = 571,433.30
  5. Step 5: Solve for x
    x = 571,433.30/643.01
  6. Step 6: Final answer
    x = 888.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.