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Finding the Fourth Proportional to 247.08, 370.40 and 155.51

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Solution

The fourth proportional to 247.08, 370.40 and 155.51 is: 233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.08 : 370.40 = 155.51 : x
  2. Step 2: Convert to fraction form
    247.08/370.40 = 155.51/x
  3. Step 3: Cross multiply
    247.08x = 370.40 × 155.51
  4. Step 4: Simplify right side
    247.08x = 57,598.27
  5. Step 5: Solve for x
    x = 57,598.27/247.08
  6. Step 6: Final answer
    x = 233.12

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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.