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Finding the Fourth Proportional to 670.28, 926.24 and 603.86

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Solution

The fourth proportional to 670.28, 926.24 and 603.86 is: 834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.28 : 926.24 = 603.86 : x
  2. Step 2: Convert to fraction form
    670.28/926.24 = 603.86/x
  3. Step 3: Cross multiply
    670.28x = 926.24 × 603.86
  4. Step 4: Simplify right side
    670.28x = 559,311.64
  5. Step 5: Solve for x
    x = 559,311.64/670.28
  6. Step 6: Final answer
    x = 834.45

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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.