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Finding the Fourth Proportional to 935.79, 1,403.68 and 358.67

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Solution

The fourth proportional to 935.79, 1,403.68 and 358.67 is: 538.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.79 : 1,403.68 = 358.67 : x
  2. Step 2: Convert to fraction form
    935.79/1,403.68 = 358.67/x
  3. Step 3: Cross multiply
    935.79x = 1,403.68 × 358.67
  4. Step 4: Simplify right side
    935.79x = 503,456.60
  5. Step 5: Solve for x
    x = 503,456.60/935.79
  6. Step 6: Final answer
    x = 538.00

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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.