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Finding the Fourth Proportional to 877.37, 1,210.75 and 504.32

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Solution

The fourth proportional to 877.37, 1,210.75 and 504.32 is: 695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.37 : 1,210.75 = 504.32 : x
  2. Step 2: Convert to fraction form
    877.37/1,210.75 = 504.32/x
  3. Step 3: Cross multiply
    877.37x = 1,210.75 × 504.32
  4. Step 4: Simplify right side
    877.37x = 610,598.13
  5. Step 5: Solve for x
    x = 610,598.13/877.37
  6. Step 6: Final answer
    x = 695.95

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Double scale
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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.