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Finding the Fourth Proportional to 1,258.17, 1,887.84 and 565.03

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Solution

The fourth proportional to 1,258.17, 1,887.84 and 565.03 is: 847.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.17 : 1,887.84 = 565.03 : x
  2. Step 2: Convert to fraction form
    1,258.17/1,887.84 = 565.03/x
  3. Step 3: Cross multiply
    1,258.17x = 1,887.84 × 565.03
  4. Step 4: Simplify right side
    1,258.17x = 1,066,686.24
  5. Step 5: Solve for x
    x = 1,066,686.24/1,258.17
  6. Step 6: Final answer
    x = 847.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.