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Finding the Fourth Proportional to 501.39, 752.49 and 340.20

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Solution

The fourth proportional to 501.39, 752.49 and 340.20 is: 510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 752.49 = 340.20 : x
  2. Step 2: Convert to fraction form
    501.39/752.49 = 340.20/x
  3. Step 3: Cross multiply
    501.39x = 752.49 × 340.20
  4. Step 4: Simplify right side
    501.39x = 255,997.10
  5. Step 5: Solve for x
    x = 255,997.10/501.39
  6. Step 6: Final answer
    x = 510.57

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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.