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Finding the Fourth Proportional to 459.73, 688.06 and 385.93

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Solution

The fourth proportional to 459.73, 688.06 and 385.93 is: 577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.73 : 688.06 = 385.93 : x
  2. Step 2: Convert to fraction form
    459.73/688.06 = 385.93/x
  3. Step 3: Cross multiply
    459.73x = 688.06 × 385.93
  4. Step 4: Simplify right side
    459.73x = 265,543.00
  5. Step 5: Solve for x
    x = 265,543.00/459.73
  6. Step 6: Final answer
    x = 577.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.