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Finding the Fourth Proportional to 660.08, 909.96 and 462.98

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Solution

The fourth proportional to 660.08, 909.96 and 462.98 is: 638.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.08 : 909.96 = 462.98 : x
  2. Step 2: Convert to fraction form
    660.08/909.96 = 462.98/x
  3. Step 3: Cross multiply
    660.08x = 909.96 × 462.98
  4. Step 4: Simplify right side
    660.08x = 421,293.28
  5. Step 5: Solve for x
    x = 421,293.28/660.08
  6. Step 6: Final answer
    x = 638.25

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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.