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Finding the Fourth Proportional to 623.24, 859.16 and 436.15

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Solution

The fourth proportional to 623.24, 859.16 and 436.15 is: 601.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.24 : 859.16 = 436.15 : x
  2. Step 2: Convert to fraction form
    623.24/859.16 = 436.15/x
  3. Step 3: Cross multiply
    623.24x = 859.16 × 436.15
  4. Step 4: Simplify right side
    623.24x = 374,716.16
  5. Step 5: Solve for x
    x = 374,716.16/623.24
  6. Step 6: Final answer
    x = 601.24

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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.