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Finding the Fourth Proportional to 651.80, 975.53 and 571.61

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Solution

The fourth proportional to 651.80, 975.53 and 571.61 is: 855.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.80 : 975.53 = 571.61 : x
  2. Step 2: Convert to fraction form
    651.80/975.53 = 571.61/x
  3. Step 3: Cross multiply
    651.80x = 975.53 × 571.61
  4. Step 4: Simplify right side
    651.80x = 557,619.25
  5. Step 5: Solve for x
    x = 557,619.25/651.80
  6. Step 6: Final answer
    x = 855.51

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Double scale
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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.