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Finding the Fourth Proportional to 470.48, 706.32 and 296.66

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Solution

The fourth proportional to 470.48, 706.32 and 296.66 is: 445.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.48 : 706.32 = 296.66 : x
  2. Step 2: Convert to fraction form
    470.48/706.32 = 296.66/x
  3. Step 3: Cross multiply
    470.48x = 706.32 × 296.66
  4. Step 4: Simplify right side
    470.48x = 209,538.66
  5. Step 5: Solve for x
    x = 209,538.66/470.48
  6. Step 6: Final answer
    x = 445.38

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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.