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Finding the Fourth Proportional to 887.99, 1,329.65 and 626.57

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Solution

The fourth proportional to 887.99, 1,329.65 and 626.57 is: 938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.99 : 1,329.65 = 626.57 : x
  2. Step 2: Convert to fraction form
    887.99/1,329.65 = 626.57/x
  3. Step 3: Cross multiply
    887.99x = 1,329.65 × 626.57
  4. Step 4: Simplify right side
    887.99x = 833,123.69
  5. Step 5: Solve for x
    x = 833,123.69/887.99
  6. Step 6: Final answer
    x = 938.21

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1.5x scale

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.