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Finding the Fourth Proportional to 503.55, 754.11 and 340.74

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Solution

The fourth proportional to 503.55, 754.11 and 340.74 is: 510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.55 : 754.11 = 340.74 : x
  2. Step 2: Convert to fraction form
    503.55/754.11 = 340.74/x
  3. Step 3: Cross multiply
    503.55x = 754.11 × 340.74
  4. Step 4: Simplify right side
    503.55x = 256,955.44
  5. Step 5: Solve for x
    x = 256,955.44/503.55
  6. Step 6: Final answer
    x = 510.29

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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.