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Finding the Fourth Proportional to 623.15, 859.93 and 374.53

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Solution

The fourth proportional to 623.15, 859.93 and 374.53 is: 516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.15 : 859.93 = 374.53 : x
  2. Step 2: Convert to fraction form
    623.15/859.93 = 374.53/x
  3. Step 3: Cross multiply
    623.15x = 859.93 × 374.53
  4. Step 4: Simplify right side
    623.15x = 322,066.50
  5. Step 5: Solve for x
    x = 322,066.50/623.15
  6. Step 6: Final answer
    x = 516.84

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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.