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Finding the Fourth Proportional to 55.40, 76.47 and 37.00

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Solution

The fourth proportional to 55.40, 76.47 and 37.00 is: 51.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.40 : 76.47 = 37.00 : x
  2. Step 2: Convert to fraction form
    55.40/76.47 = 37.00/x
  3. Step 3: Cross multiply
    55.40x = 76.47 × 37.00
  4. Step 4: Simplify right side
    55.40x = 2,829.01
  5. Step 5: Solve for x
    x = 2,829.01/55.40
  6. Step 6: Final answer
    x = 51.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.