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Finding the Fourth Proportional to 540.84, 746.36 and 383.76

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Solution

The fourth proportional to 540.84, 746.36 and 383.76 is: 529.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.84 : 746.36 = 383.76 : x
  2. Step 2: Convert to fraction form
    540.84/746.36 = 383.76/x
  3. Step 3: Cross multiply
    540.84x = 746.36 × 383.76
  4. Step 4: Simplify right side
    540.84x = 286,423.11
  5. Step 5: Solve for x
    x = 286,423.11/540.84
  6. Step 6: Final answer
    x = 529.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.