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Finding the Fourth Proportional to 514.53, 710.02 and 304.70

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Solution

The fourth proportional to 514.53, 710.02 and 304.70 is: 420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.53 : 710.02 = 304.70 : x
  2. Step 2: Convert to fraction form
    514.53/710.02 = 304.70/x
  3. Step 3: Cross multiply
    514.53x = 710.02 × 304.70
  4. Step 4: Simplify right side
    514.53x = 216,343.09
  5. Step 5: Solve for x
    x = 216,343.09/514.53
  6. Step 6: Final answer
    x = 420.47

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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.