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Finding the Fourth Proportional to 356.94, 535.50 and 289.08

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Solution

The fourth proportional to 356.94, 535.50 and 289.08 is: 433.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.94 : 535.50 = 289.08 : x
  2. Step 2: Convert to fraction form
    356.94/535.50 = 289.08/x
  3. Step 3: Cross multiply
    356.94x = 535.50 × 289.08
  4. Step 4: Simplify right side
    356.94x = 154,802.34
  5. Step 5: Solve for x
    x = 154,802.34/356.94
  6. Step 6: Final answer
    x = 433.69

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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.