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Finding the Fourth Proportional to 426.77, 589.71 and 368.45

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Solution

The fourth proportional to 426.77, 589.71 and 368.45 is: 509.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.77 : 589.71 = 368.45 : x
  2. Step 2: Convert to fraction form
    426.77/589.71 = 368.45/x
  3. Step 3: Cross multiply
    426.77x = 589.71 × 368.45
  4. Step 4: Simplify right side
    426.77x = 217,275.70
  5. Step 5: Solve for x
    x = 217,275.70/426.77
  6. Step 6: Final answer
    x = 509.12

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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.