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Finding the Fourth Proportional to 501.12, 690.12 and 370.44

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Solution

The fourth proportional to 501.12, 690.12 and 370.44 is: 510.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.12 : 690.12 = 370.44 : x
  2. Step 2: Convert to fraction form
    501.12/690.12 = 370.44/x
  3. Step 3: Cross multiply
    501.12x = 690.12 × 370.44
  4. Step 4: Simplify right side
    501.12x = 255,648.05
  5. Step 5: Solve for x
    x = 255,648.05/501.12
  6. Step 6: Final answer
    x = 510.15

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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.