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Finding the Fourth Proportional to 425.74, 637.45 and 370.36

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Solution

The fourth proportional to 425.74, 637.45 and 370.36 is: 554.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.74 : 637.45 = 370.36 : x
  2. Step 2: Convert to fraction form
    425.74/637.45 = 370.36/x
  3. Step 3: Cross multiply
    425.74x = 637.45 × 370.36
  4. Step 4: Simplify right side
    425.74x = 236,085.98
  5. Step 5: Solve for x
    x = 236,085.98/425.74
  6. Step 6: Final answer
    x = 554.53

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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.