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Finding the Fourth Proportional to 603.79, 901.36 and 577.20

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Solution

The fourth proportional to 603.79, 901.36 and 577.20 is: 861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.79 : 901.36 = 577.20 : x
  2. Step 2: Convert to fraction form
    603.79/901.36 = 577.20/x
  3. Step 3: Cross multiply
    603.79x = 901.36 × 577.20
  4. Step 4: Simplify right side
    603.79x = 520,260.17
  5. Step 5: Solve for x
    x = 520,260.17/603.79
  6. Step 6: Final answer
    x = 861.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.