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Finding the Fourth Proportional to 690.07, 951.18 and 605.83

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Solution

The fourth proportional to 690.07, 951.18 and 605.83 is: 835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.07 : 951.18 = 605.83 : x
  2. Step 2: Convert to fraction form
    690.07/951.18 = 605.83/x
  3. Step 3: Cross multiply
    690.07x = 951.18 × 605.83
  4. Step 4: Simplify right side
    690.07x = 576,253.38
  5. Step 5: Solve for x
    x = 576,253.38/690.07
  6. Step 6: Final answer
    x = 835.07

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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.