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Finding the Fourth Proportional to 877.06, 1,210.53 and 504.01

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Solution

The fourth proportional to 877.06, 1,210.53 and 504.01 is: 695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.06 : 1,210.53 = 504.01 : x
  2. Step 2: Convert to fraction form
    877.06/1,210.53 = 504.01/x
  3. Step 3: Cross multiply
    877.06x = 1,210.53 × 504.01
  4. Step 4: Simplify right side
    877.06x = 610,119.23
  5. Step 5: Solve for x
    x = 610,119.23/877.06
  6. Step 6: Final answer
    x = 695.64

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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.