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Finding the Fourth Proportional to 624.15, 860.67 and 437.58

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Solution

The fourth proportional to 624.15, 860.67 and 437.58 is: 603.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.15 : 860.67 = 437.58 : x
  2. Step 2: Convert to fraction form
    624.15/860.67 = 437.58/x
  3. Step 3: Cross multiply
    624.15x = 860.67 × 437.58
  4. Step 4: Simplify right side
    624.15x = 376,611.98
  5. Step 5: Solve for x
    x = 376,611.98/624.15
  6. Step 6: Final answer
    x = 603.40

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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.