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Finding the Fourth Proportional to 278.10, 417.96 and 237.60

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Solution

The fourth proportional to 278.10, 417.96 and 237.60 is: 357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.10 : 417.96 = 237.60 : x
  2. Step 2: Convert to fraction form
    278.10/417.96 = 237.60/x
  3. Step 3: Cross multiply
    278.10x = 417.96 × 237.60
  4. Step 4: Simplify right side
    278.10x = 99,307.30
  5. Step 5: Solve for x
    x = 99,307.30/278.10
  6. Step 6: Final answer
    x = 357.09

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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.