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Finding the Fourth Proportional to 633.35, 874.30 and 384.75

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Solution

The fourth proportional to 633.35, 874.30 and 384.75 is: 531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.35 : 874.30 = 384.75 : x
  2. Step 2: Convert to fraction form
    633.35/874.30 = 384.75/x
  3. Step 3: Cross multiply
    633.35x = 874.30 × 384.75
  4. Step 4: Simplify right side
    633.35x = 336,386.93
  5. Step 5: Solve for x
    x = 336,386.93/633.35
  6. Step 6: Final answer
    x = 531.12

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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.