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Finding the Fourth Proportional to 558.77, 770.72 and 325.76

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Solution

The fourth proportional to 558.77, 770.72 and 325.76 is: 449.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.77 : 770.72 = 325.76 : x
  2. Step 2: Convert to fraction form
    558.77/770.72 = 325.76/x
  3. Step 3: Cross multiply
    558.77x = 770.72 × 325.76
  4. Step 4: Simplify right side
    558.77x = 251,064.26
  5. Step 5: Solve for x
    x = 251,064.26/558.77
  6. Step 6: Final answer
    x = 449.32

Related Problems

Find fourth proportional to 279.38, 385.36 and 162.88
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Double scale
Find fourth proportional to 559.77, 772.09 and 326.76
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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.