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Finding the Fourth Proportional to 934.87, 1,289.52 and 695.38

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Solution

The fourth proportional to 934.87, 1,289.52 and 695.38 is: 959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.87 : 1,289.52 = 695.38 : x
  2. Step 2: Convert to fraction form
    934.87/1,289.52 = 695.38/x
  3. Step 3: Cross multiply
    934.87x = 1,289.52 × 695.38
  4. Step 4: Simplify right side
    934.87x = 896,703.19
  5. Step 5: Solve for x
    x = 896,703.19/934.87
  6. Step 6: Final answer
    x = 959.18

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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.