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Finding the Fourth Proportional to 894.99, 1,340.65 and 528.90

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Solution

The fourth proportional to 894.99, 1,340.65 and 528.90 is: 792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.99 : 1,340.65 = 528.90 : x
  2. Step 2: Convert to fraction form
    894.99/1,340.65 = 528.90/x
  3. Step 3: Cross multiply
    894.99x = 1,340.65 × 528.90
  4. Step 4: Simplify right side
    894.99x = 709,065.42
  5. Step 5: Solve for x
    x = 709,065.42/894.99
  6. Step 6: Final answer
    x = 792.26

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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.