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Finding the Fourth Proportional to 623.57, 934.51 and 315.64

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Solution

The fourth proportional to 623.57, 934.51 and 315.64 is: 473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.57 : 934.51 = 315.64 : x
  2. Step 2: Convert to fraction form
    623.57/934.51 = 315.64/x
  3. Step 3: Cross multiply
    623.57x = 934.51 × 315.64
  4. Step 4: Simplify right side
    623.57x = 294,964.06
  5. Step 5: Solve for x
    x = 294,964.06/623.57
  6. Step 6: Final answer
    x = 473.03

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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.