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Finding the Fourth Proportional to 246.58, 370.02 and 138.40

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Solution

The fourth proportional to 246.58, 370.02 and 138.40 is: 207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.58 : 370.02 = 138.40 : x
  2. Step 2: Convert to fraction form
    246.58/370.02 = 138.40/x
  3. Step 3: Cross multiply
    246.58x = 370.02 × 138.40
  4. Step 4: Simplify right side
    246.58x = 51,210.77
  5. Step 5: Solve for x
    x = 51,210.77/246.58
  6. Step 6: Final answer
    x = 207.68

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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.