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Finding the Fourth Proportional to 1,015.02, 1,520.60 and 602.91

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Solution

The fourth proportional to 1,015.02, 1,520.60 and 602.91 is: 903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.02 : 1,520.60 = 602.91 : x
  2. Step 2: Convert to fraction form
    1,015.02/1,520.60 = 602.91/x
  3. Step 3: Cross multiply
    1,015.02x = 1,520.60 × 602.91
  4. Step 4: Simplify right side
    1,015.02x = 916,781.93
  5. Step 5: Solve for x
    x = 916,781.93/1,015.02
  6. Step 6: Final answer
    x = 903.22

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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.