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Finding the Fourth Proportional to 556.98, 830.58 and 480.48

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Solution

The fourth proportional to 556.98, 830.58 and 480.48 is: 716.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.98 : 830.58 = 480.48 : x
  2. Step 2: Convert to fraction form
    556.98/830.58 = 480.48/x
  3. Step 3: Cross multiply
    556.98x = 830.58 × 480.48
  4. Step 4: Simplify right side
    556.98x = 399,077.08
  5. Step 5: Solve for x
    x = 399,077.08/556.98
  6. Step 6: Final answer
    x = 716.50

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.