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Finding the Fourth Proportional to 572.91, 790.88 and 384.18

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Solution

The fourth proportional to 572.91, 790.88 and 384.18 is: 530.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.91 : 790.88 = 384.18 : x
  2. Step 2: Convert to fraction form
    572.91/790.88 = 384.18/x
  3. Step 3: Cross multiply
    572.91x = 790.88 × 384.18
  4. Step 4: Simplify right side
    572.91x = 303,836.32
  5. Step 5: Solve for x
    x = 303,836.32/572.91
  6. Step 6: Final answer
    x = 530.34

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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.