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Finding the Fourth Proportional to 683.24, 942.18 and 637.16

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Solution

The fourth proportional to 683.24, 942.18 and 637.16 is: 878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.24 : 942.18 = 637.16 : x
  2. Step 2: Convert to fraction form
    683.24/942.18 = 637.16/x
  3. Step 3: Cross multiply
    683.24x = 942.18 × 637.16
  4. Step 4: Simplify right side
    683.24x = 600,319.41
  5. Step 5: Solve for x
    x = 600,319.41/683.24
  6. Step 6: Final answer
    x = 878.64

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1.5x scale

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.