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Finding the Fourth Proportional to 768.76, 1,060.91 and 437.23

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Solution

The fourth proportional to 768.76, 1,060.91 and 437.23 is: 603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.76 : 1,060.91 = 437.23 : x
  2. Step 2: Convert to fraction form
    768.76/1,060.91 = 437.23/x
  3. Step 3: Cross multiply
    768.76x = 1,060.91 × 437.23
  4. Step 4: Simplify right side
    768.76x = 463,862.46
  5. Step 5: Solve for x
    x = 463,862.46/768.76
  6. Step 6: Final answer
    x = 603.39

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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.