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Finding the Fourth Proportional to 357.84, 536.22 and 266.10

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Solution

The fourth proportional to 357.84, 536.22 and 266.10 is: 398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.84 : 536.22 = 266.10 : x
  2. Step 2: Convert to fraction form
    357.84/536.22 = 266.10/x
  3. Step 3: Cross multiply
    357.84x = 536.22 × 266.10
  4. Step 4: Simplify right side
    357.84x = 142,688.14
  5. Step 5: Solve for x
    x = 142,688.14/357.84
  6. Step 6: Final answer
    x = 398.75

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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.