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Finding the Fourth Proportional to 654.24, 897.60 and 637.20

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Solution

The fourth proportional to 654.24, 897.60 and 637.20 is: 874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.24 : 897.60 = 637.20 : x
  2. Step 2: Convert to fraction form
    654.24/897.60 = 637.20/x
  3. Step 3: Cross multiply
    654.24x = 897.60 × 637.20
  4. Step 4: Simplify right side
    654.24x = 571,950.72
  5. Step 5: Solve for x
    x = 571,950.72/654.24
  6. Step 6: Final answer
    x = 874.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.