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Finding the Fourth Proportional to 501.36, 750.62 and 398.80

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Solution

The fourth proportional to 501.36, 750.62 and 398.80 is: 597.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.36 : 750.62 = 398.80 : x
  2. Step 2: Convert to fraction form
    501.36/750.62 = 398.80/x
  3. Step 3: Cross multiply
    501.36x = 750.62 × 398.80
  4. Step 4: Simplify right side
    501.36x = 299,347.26
  5. Step 5: Solve for x
    x = 299,347.26/501.36
  6. Step 6: Final answer
    x = 597.07

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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.