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Finding the Fourth Proportional to 877.01, 1,210.28 and 527.63

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Solution

The fourth proportional to 877.01, 1,210.28 and 527.63 is: 728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.01 : 1,210.28 = 527.63 : x
  2. Step 2: Convert to fraction form
    877.01/1,210.28 = 527.63/x
  3. Step 3: Cross multiply
    877.01x = 1,210.28 × 527.63
  4. Step 4: Simplify right side
    877.01x = 638,571.35
  5. Step 5: Solve for x
    x = 638,571.35/877.01
  6. Step 6: Final answer
    x = 728.13

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1.5x scale

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.