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Finding the Fourth Proportional to 623.65, 860.12 and 608.61

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Solution

The fourth proportional to 623.65, 860.12 and 608.61 is: 839.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.65 : 860.12 = 608.61 : x
  2. Step 2: Convert to fraction form
    623.65/860.12 = 608.61/x
  3. Step 3: Cross multiply
    623.65x = 860.12 × 608.61
  4. Step 4: Simplify right side
    623.65x = 523,480.10
  5. Step 5: Solve for x
    x = 523,480.10/623.65
  6. Step 6: Final answer
    x = 839.38

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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.