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Finding the Fourth Proportional to 768.61, 1,060.70 and 437.03

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Solution

The fourth proportional to 768.61, 1,060.70 and 437.03 is: 603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.61 : 1,060.70 = 437.03 : x
  2. Step 2: Convert to fraction form
    768.61/1,060.70 = 437.03/x
  3. Step 3: Cross multiply
    768.61x = 1,060.70 × 437.03
  4. Step 4: Simplify right side
    768.61x = 463,557.72
  5. Step 5: Solve for x
    x = 463,557.72/768.61
  6. Step 6: Final answer
    x = 603.11

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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.