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Finding the Fourth Proportional to 340.24, 510.07 and 145.39

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Solution

The fourth proportional to 340.24, 510.07 and 145.39 is: 217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.24 : 510.07 = 145.39 : x
  2. Step 2: Convert to fraction form
    340.24/510.07 = 145.39/x
  3. Step 3: Cross multiply
    340.24x = 510.07 × 145.39
  4. Step 4: Simplify right side
    340.24x = 74,159.08
  5. Step 5: Solve for x
    x = 74,159.08/340.24
  6. Step 6: Final answer
    x = 217.96

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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.