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Finding the Fourth Proportional to 357.15, 531.48 and 353.50

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Solution

The fourth proportional to 357.15, 531.48 and 353.50 is: 526.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.15 : 531.48 = 353.50 : x
  2. Step 2: Convert to fraction form
    357.15/531.48 = 353.50/x
  3. Step 3: Cross multiply
    357.15x = 531.48 × 353.50
  4. Step 4: Simplify right side
    357.15x = 187,878.18
  5. Step 5: Solve for x
    x = 187,878.18/357.15
  6. Step 6: Final answer
    x = 526.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.