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Finding the Fourth Proportional to 501.36, 691.48 and 335.48

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Solution

The fourth proportional to 501.36, 691.48 and 335.48 is: 462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.36 : 691.48 = 335.48 : x
  2. Step 2: Convert to fraction form
    501.36/691.48 = 335.48/x
  3. Step 3: Cross multiply
    501.36x = 691.48 × 335.48
  4. Step 4: Simplify right side
    501.36x = 231,977.71
  5. Step 5: Solve for x
    x = 231,977.71/501.36
  6. Step 6: Final answer
    x = 462.70

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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.