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Finding the Fourth Proportional to 510.18, 704.07 and 289.19

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Solution

The fourth proportional to 510.18, 704.07 and 289.19 is: 399.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.18 : 704.07 = 289.19 : x
  2. Step 2: Convert to fraction form
    510.18/704.07 = 289.19/x
  3. Step 3: Cross multiply
    510.18x = 704.07 × 289.19
  4. Step 4: Simplify right side
    510.18x = 203,610.00
  5. Step 5: Solve for x
    x = 203,610.00/510.18
  6. Step 6: Final answer
    x = 399.09

Related Problems

Find fourth proportional to 255.09, 352.04 and 144.60
Half scale
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Double scale
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Similar ratio
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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.