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Finding the Fourth Proportional to 510.45, 765.63 and 250.35

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Solution

The fourth proportional to 510.45, 765.63 and 250.35 is: 375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.45 : 765.63 = 250.35 : x
  2. Step 2: Convert to fraction form
    510.45/765.63 = 250.35/x
  3. Step 3: Cross multiply
    510.45x = 765.63 × 250.35
  4. Step 4: Simplify right side
    510.45x = 191,675.47
  5. Step 5: Solve for x
    x = 191,675.47/510.45
  6. Step 6: Final answer
    x = 375.50

Related Problems

Find fourth proportional to 255.23, 382.82 and 125.18
Half scale
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Double scale
Find fourth proportional to 511.45, 767.13 and 251.35
Similar ratio
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1.5x scale

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.