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Finding the Fourth Proportional to 624.90, 859.76 and 610.32

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Solution

The fourth proportional to 624.90, 859.76 and 610.32 is: 839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.90 : 859.76 = 610.32 : x
  2. Step 2: Convert to fraction form
    624.90/859.76 = 610.32/x
  3. Step 3: Cross multiply
    624.90x = 859.76 × 610.32
  4. Step 4: Simplify right side
    624.90x = 524,728.72
  5. Step 5: Solve for x
    x = 524,728.72/624.90
  6. Step 6: Final answer
    x = 839.70

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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.