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Finding the Fourth Proportional to 900.32, 1,242.44 and 501.98

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Solution

The fourth proportional to 900.32, 1,242.44 and 501.98 is: 692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.32 : 1,242.44 = 501.98 : x
  2. Step 2: Convert to fraction form
    900.32/1,242.44 = 501.98/x
  3. Step 3: Cross multiply
    900.32x = 1,242.44 × 501.98
  4. Step 4: Simplify right side
    900.32x = 623,676.69
  5. Step 5: Solve for x
    x = 623,676.69/900.32
  6. Step 6: Final answer
    x = 692.73

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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.