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Finding the Fourth Proportional to 909.95, 1,365.08 and 293.67

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Solution

The fourth proportional to 909.95, 1,365.08 and 293.67 is: 440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.95 : 1,365.08 = 293.67 : x
  2. Step 2: Convert to fraction form
    909.95/1,365.08 = 293.67/x
  3. Step 3: Cross multiply
    909.95x = 1,365.08 × 293.67
  4. Step 4: Simplify right side
    909.95x = 400,881.58
  5. Step 5: Solve for x
    x = 400,881.58/909.95
  6. Step 6: Final answer
    x = 440.56

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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.