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Finding the Fourth Proportional to 817.07, 1,128.35 and 592.61

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Solution

The fourth proportional to 817.07, 1,128.35 and 592.61 is: 818.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.07 : 1,128.35 = 592.61 : x
  2. Step 2: Convert to fraction form
    817.07/1,128.35 = 592.61/x
  3. Step 3: Cross multiply
    817.07x = 1,128.35 × 592.61
  4. Step 4: Simplify right side
    817.07x = 668,667.33
  5. Step 5: Solve for x
    x = 668,667.33/817.07
  6. Step 6: Final answer
    x = 818.38

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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.