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Finding the Fourth Proportional to 711.67, 981.16 and 533.88

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Solution

The fourth proportional to 711.67, 981.16 and 533.88 is: 736.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.67 : 981.16 = 533.88 : x
  2. Step 2: Convert to fraction form
    711.67/981.16 = 533.88/x
  3. Step 3: Cross multiply
    711.67x = 981.16 × 533.88
  4. Step 4: Simplify right side
    711.67x = 523,814.13
  5. Step 5: Solve for x
    x = 523,814.13/711.67
  6. Step 6: Final answer
    x = 736.04

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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.