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Finding the Fourth Proportional to 603.28, 830.12 and 587.14

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Solution

The fourth proportional to 603.28, 830.12 and 587.14 is: 807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.28 : 830.12 = 587.14 : x
  2. Step 2: Convert to fraction form
    603.28/830.12 = 587.14/x
  3. Step 3: Cross multiply
    603.28x = 830.12 × 587.14
  4. Step 4: Simplify right side
    603.28x = 487,396.66
  5. Step 5: Solve for x
    x = 487,396.66/603.28
  6. Step 6: Final answer
    x = 807.91

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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.