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Finding the Fourth Proportional to 623.49, 935.16 and 258.18

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Solution

The fourth proportional to 623.49, 935.16 and 258.18 is: 387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.49 : 935.16 = 258.18 : x
  2. Step 2: Convert to fraction form
    623.49/935.16 = 258.18/x
  3. Step 3: Cross multiply
    623.49x = 935.16 × 258.18
  4. Step 4: Simplify right side
    623.49x = 241,439.61
  5. Step 5: Solve for x
    x = 241,439.61/623.49
  6. Step 6: Final answer
    x = 387.24

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.