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Finding the Fourth Proportional to 514.54, 710.40 and 357.13

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Solution

The fourth proportional to 514.54, 710.40 and 357.13 is: 493.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.54 : 710.40 = 357.13 : x
  2. Step 2: Convert to fraction form
    514.54/710.40 = 357.13/x
  3. Step 3: Cross multiply
    514.54x = 710.40 × 357.13
  4. Step 4: Simplify right side
    514.54x = 253,700.37
  5. Step 5: Solve for x
    x = 253,700.37/514.54
  6. Step 6: Final answer
    x = 493.06

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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.