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Finding the Fourth Proportional to 510.75, 703.28 and 436.91

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Solution

The fourth proportional to 510.75, 703.28 and 436.91 is: 601.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.75 : 703.28 = 436.91 : x
  2. Step 2: Convert to fraction form
    510.75/703.28 = 436.91/x
  3. Step 3: Cross multiply
    510.75x = 703.28 × 436.91
  4. Step 4: Simplify right side
    510.75x = 307,264.36
  5. Step 5: Solve for x
    x = 307,264.36/510.75
  6. Step 6: Final answer
    x = 601.59

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Find fourth proportional to 255.38, 351.64 and 218.45
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1.5x scale

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.