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Finding the Fourth Proportional to 330.88, 498.76 and 297.40

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Solution

The fourth proportional to 330.88, 498.76 and 297.40 is: 448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.88 : 498.76 = 297.40 : x
  2. Step 2: Convert to fraction form
    330.88/498.76 = 297.40/x
  3. Step 3: Cross multiply
    330.88x = 498.76 × 297.40
  4. Step 4: Simplify right side
    330.88x = 148,331.22
  5. Step 5: Solve for x
    x = 148,331.22/330.88
  6. Step 6: Final answer
    x = 448.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.