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Finding the Fourth Proportional to 946.86, 1,307.27 and 610.91

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Solution

The fourth proportional to 946.86, 1,307.27 and 610.91 is: 843.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.86 : 1,307.27 = 610.91 : x
  2. Step 2: Convert to fraction form
    946.86/1,307.27 = 610.91/x
  3. Step 3: Cross multiply
    946.86x = 1,307.27 × 610.91
  4. Step 4: Simplify right side
    946.86x = 798,624.21
  5. Step 5: Solve for x
    x = 798,624.21/946.86
  6. Step 6: Final answer
    x = 843.45

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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.