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Finding the Fourth Proportional to 357.12, 535.53 and 183.45

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Solution

The fourth proportional to 357.12, 535.53 and 183.45 is: 275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.12 : 535.53 = 183.45 : x
  2. Step 2: Convert to fraction form
    357.12/535.53 = 183.45/x
  3. Step 3: Cross multiply
    357.12x = 535.53 × 183.45
  4. Step 4: Simplify right side
    357.12x = 98,242.98
  5. Step 5: Solve for x
    x = 98,242.98/357.12
  6. Step 6: Final answer
    x = 275.10

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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.