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Finding the Fourth Proportional to 736.85, 1,017 and 484.80

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Solution

The fourth proportional to 736.85, 1,017 and 484.80 is: 669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.85 : 1,017 = 484.80 : x
  2. Step 2: Convert to fraction form
    736.85/1,017 = 484.80/x
  3. Step 3: Cross multiply
    736.85x = 1,017 × 484.80
  4. Step 4: Simplify right side
    736.85x = 493,041.60
  5. Step 5: Solve for x
    x = 493,041.60/736.85
  6. Step 6: Final answer
    x = 669.13

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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.