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Finding the Fourth Proportional to 518.48, 714.76 and 344.08

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Solution

The fourth proportional to 518.48, 714.76 and 344.08 is: 474.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.48 : 714.76 = 344.08 : x
  2. Step 2: Convert to fraction form
    518.48/714.76 = 344.08/x
  3. Step 3: Cross multiply
    518.48x = 714.76 × 344.08
  4. Step 4: Simplify right side
    518.48x = 245,934.62
  5. Step 5: Solve for x
    x = 245,934.62/518.48
  6. Step 6: Final answer
    x = 474.34

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.