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Finding the Fourth Proportional to 473.04, 708.35 and 391.64

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Solution

The fourth proportional to 473.04, 708.35 and 391.64 is: 586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.04 : 708.35 = 391.64 : x
  2. Step 2: Convert to fraction form
    473.04/708.35 = 391.64/x
  3. Step 3: Cross multiply
    473.04x = 708.35 × 391.64
  4. Step 4: Simplify right side
    473.04x = 277,412.69
  5. Step 5: Solve for x
    x = 277,412.69/473.04
  6. Step 6: Final answer
    x = 586.45

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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.