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Finding the Fourth Proportional to 934.41, 1,289.54 and 530.65

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Solution

The fourth proportional to 934.41, 1,289.54 and 530.65 is: 732.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.41 : 1,289.54 = 530.65 : x
  2. Step 2: Convert to fraction form
    934.41/1,289.54 = 530.65/x
  3. Step 3: Cross multiply
    934.41x = 1,289.54 × 530.65
  4. Step 4: Simplify right side
    934.41x = 684,294.40
  5. Step 5: Solve for x
    x = 684,294.40/934.41
  6. Step 6: Final answer
    x = 732.33

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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.