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Finding the Fourth Proportional to 624.08, 860.74 and 403.08

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Solution

The fourth proportional to 624.08, 860.74 and 403.08 is: 555.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.08 : 860.74 = 403.08 : x
  2. Step 2: Convert to fraction form
    624.08/860.74 = 403.08/x
  3. Step 3: Cross multiply
    624.08x = 860.74 × 403.08
  4. Step 4: Simplify right side
    624.08x = 346,946.07
  5. Step 5: Solve for x
    x = 346,946.07/624.08
  6. Step 6: Final answer
    x = 555.94

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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.