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Finding the Fourth Proportional to 877.10, 1,210.28 and 484.10

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Solution

The fourth proportional to 877.10, 1,210.28 and 484.10 is: 667.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.10 : 1,210.28 = 484.10 : x
  2. Step 2: Convert to fraction form
    877.10/1,210.28 = 484.10/x
  3. Step 3: Cross multiply
    877.10x = 1,210.28 × 484.10
  4. Step 4: Simplify right side
    877.10x = 585,896.55
  5. Step 5: Solve for x
    x = 585,896.55/877.10
  6. Step 6: Final answer
    x = 667.99

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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.