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Finding the Fourth Proportional to 514.60, 710.02 and 307.56

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Solution

The fourth proportional to 514.60, 710.02 and 307.56 is: 424.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.60 : 710.02 = 307.56 : x
  2. Step 2: Convert to fraction form
    514.60/710.02 = 307.56/x
  3. Step 3: Cross multiply
    514.60x = 710.02 × 307.56
  4. Step 4: Simplify right side
    514.60x = 218,373.75
  5. Step 5: Solve for x
    x = 218,373.75/514.60
  6. Step 6: Final answer
    x = 424.36

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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.