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Finding the Fourth Proportional to 839.37, 1,158.32 and 466.35

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Solution

The fourth proportional to 839.37, 1,158.32 and 466.35 is: 643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.37 : 1,158.32 = 466.35 : x
  2. Step 2: Convert to fraction form
    839.37/1,158.32 = 466.35/x
  3. Step 3: Cross multiply
    839.37x = 1,158.32 × 466.35
  4. Step 4: Simplify right side
    839.37x = 540,174.41
  5. Step 5: Solve for x
    x = 540,174.41/839.37
  6. Step 6: Final answer
    x = 643.55

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Double scale
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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.