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Finding the Fourth Proportional to 307.48, 458.74 and 296.28

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Solution

The fourth proportional to 307.48, 458.74 and 296.28 is: 442.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.48 : 458.74 = 296.28 : x
  2. Step 2: Convert to fraction form
    307.48/458.74 = 296.28/x
  3. Step 3: Cross multiply
    307.48x = 458.74 × 296.28
  4. Step 4: Simplify right side
    307.48x = 135,915.49
  5. Step 5: Solve for x
    x = 135,915.49/307.48
  6. Step 6: Final answer
    x = 442.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.