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Finding the Fourth Proportional to 624.63, 937.20 and 259.35

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Solution

The fourth proportional to 624.63, 937.20 and 259.35 is: 389.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.63 : 937.20 = 259.35 : x
  2. Step 2: Convert to fraction form
    624.63/937.20 = 259.35/x
  3. Step 3: Cross multiply
    624.63x = 937.20 × 259.35
  4. Step 4: Simplify right side
    624.63x = 243,062.82
  5. Step 5: Solve for x
    x = 243,062.82/624.63
  6. Step 6: Final answer
    x = 389.13

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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.