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Finding the Fourth Proportional to 987.00, 1,480.50 and 402.01

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Solution

The fourth proportional to 987.00, 1,480.50 and 402.01 is: 603.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.00 : 1,480.50 = 402.01 : x
  2. Step 2: Convert to fraction form
    987.00/1,480.50 = 402.01/x
  3. Step 3: Cross multiply
    987.00x = 1,480.50 × 402.01
  4. Step 4: Simplify right side
    987.00x = 595,166.39
  5. Step 5: Solve for x
    x = 595,166.39/987.00
  6. Step 6: Final answer
    x = 603.01

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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.