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Finding the Fourth Proportional to 424.93, 586.36 and 238.39

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Solution

The fourth proportional to 424.93, 586.36 and 238.39 is: 328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.93 : 586.36 = 238.39 : x
  2. Step 2: Convert to fraction form
    424.93/586.36 = 238.39/x
  3. Step 3: Cross multiply
    424.93x = 586.36 × 238.39
  4. Step 4: Simplify right side
    424.93x = 139,782.96
  5. Step 5: Solve for x
    x = 139,782.96/424.93
  6. Step 6: Final answer
    x = 328.96

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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.