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Finding the Fourth Proportional to 768.18, 1,060.12 and 602.11

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Solution

The fourth proportional to 768.18, 1,060.12 and 602.11 is: 830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.18 : 1,060.12 = 602.11 : x
  2. Step 2: Convert to fraction form
    768.18/1,060.12 = 602.11/x
  3. Step 3: Cross multiply
    768.18x = 1,060.12 × 602.11
  4. Step 4: Simplify right side
    768.18x = 638,304.70
  5. Step 5: Solve for x
    x = 638,304.70/768.18
  6. Step 6: Final answer
    x = 830.93

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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.