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Finding the Fourth Proportional to 503.79, 749.70 and 484.35

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Solution

The fourth proportional to 503.79, 749.70 and 484.35 is: 720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.79 : 749.70 = 484.35 : x
  2. Step 2: Convert to fraction form
    503.79/749.70 = 484.35/x
  3. Step 3: Cross multiply
    503.79x = 749.70 × 484.35
  4. Step 4: Simplify right side
    503.79x = 363,117.20
  5. Step 5: Solve for x
    x = 363,117.20/503.79
  6. Step 6: Final answer
    x = 720.77

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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.