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Finding the Fourth Proportional to 510.02, 763.97 and 448.40

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Solution

The fourth proportional to 510.02, 763.97 and 448.40 is: 671.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.02 : 763.97 = 448.40 : x
  2. Step 2: Convert to fraction form
    510.02/763.97 = 448.40/x
  3. Step 3: Cross multiply
    510.02x = 763.97 × 448.40
  4. Step 4: Simplify right side
    510.02x = 342,567.18
  5. Step 5: Solve for x
    x = 342,567.18/510.02
  6. Step 6: Final answer
    x = 671.67

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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.