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Finding the Fourth Proportional to 357.99, 532.70 and 356.78

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Solution

The fourth proportional to 357.99, 532.70 and 356.78 is: 530.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.99 : 532.70 = 356.78 : x
  2. Step 2: Convert to fraction form
    357.99/532.70 = 356.78/x
  3. Step 3: Cross multiply
    357.99x = 532.70 × 356.78
  4. Step 4: Simplify right side
    357.99x = 190,053.26
  5. Step 5: Solve for x
    x = 190,053.26/357.99
  6. Step 6: Final answer
    x = 530.89

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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.