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Finding the Fourth Proportional to 624.04, 860.12 and 424.71

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Solution

The fourth proportional to 624.04, 860.12 and 424.71 is: 585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.04 : 860.12 = 424.71 : x
  2. Step 2: Convert to fraction form
    624.04/860.12 = 424.71/x
  3. Step 3: Cross multiply
    624.04x = 860.12 × 424.71
  4. Step 4: Simplify right side
    624.04x = 365,301.03
  5. Step 5: Solve for x
    x = 365,301.03/624.04
  6. Step 6: Final answer
    x = 585.38

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Double scale
Find fourth proportional to 625.04, 861.50 and 425.71
Similar ratio
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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.