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Finding the Fourth Proportional to 497.49, 746.35 and 278.34

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Solution

The fourth proportional to 497.49, 746.35 and 278.34 is: 417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.49 : 746.35 = 278.34 : x
  2. Step 2: Convert to fraction form
    497.49/746.35 = 278.34/x
  3. Step 3: Cross multiply
    497.49x = 746.35 × 278.34
  4. Step 4: Simplify right side
    497.49x = 207,737.89
  5. Step 5: Solve for x
    x = 207,737.89/497.49
  6. Step 6: Final answer
    x = 417.57

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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.