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Finding the Fourth Proportional to 523.35, 784.88 and 215.07

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Solution

The fourth proportional to 523.35, 784.88 and 215.07 is: 322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.35 : 784.88 = 215.07 : x
  2. Step 2: Convert to fraction form
    523.35/784.88 = 215.07/x
  3. Step 3: Cross multiply
    523.35x = 784.88 × 215.07
  4. Step 4: Simplify right side
    523.35x = 168,803.07
  5. Step 5: Solve for x
    x = 168,803.07/523.35
  6. Step 6: Final answer
    x = 322.54

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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.