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Finding the Fourth Proportional to 603.97, 904.79 and 397.91

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Solution

The fourth proportional to 603.97, 904.79 and 397.91 is: 596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.97 : 904.79 = 397.91 : x
  2. Step 2: Convert to fraction form
    603.97/904.79 = 397.91/x
  3. Step 3: Cross multiply
    603.97x = 904.79 × 397.91
  4. Step 4: Simplify right side
    603.97x = 360,024.99
  5. Step 5: Solve for x
    x = 360,024.99/603.97
  6. Step 6: Final answer
    x = 596.10

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Double scale
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Similar ratio
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1.5x scale

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.