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Finding the Fourth Proportional to 900.02, 1,242.07 and 501.69

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Solution

The fourth proportional to 900.02, 1,242.07 and 501.69 is: 692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.02 : 1,242.07 = 501.69 : x
  2. Step 2: Convert to fraction form
    900.02/1,242.07 = 501.69/x
  3. Step 3: Cross multiply
    900.02x = 1,242.07 × 501.69
  4. Step 4: Simplify right side
    900.02x = 623,130.07
  5. Step 5: Solve for x
    x = 623,130.07/900.02
  6. Step 6: Final answer
    x = 692.36

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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.