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Finding the Fourth Proportional to 804.53, 1,110.08 and 555.45

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Solution

The fourth proportional to 804.53, 1,110.08 and 555.45 is: 766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.53 : 1,110.08 = 555.45 : x
  2. Step 2: Convert to fraction form
    804.53/1,110.08 = 555.45/x
  3. Step 3: Cross multiply
    804.53x = 1,110.08 × 555.45
  4. Step 4: Simplify right side
    804.53x = 616,591.16
  5. Step 5: Solve for x
    x = 616,591.16/804.53
  6. Step 6: Final answer
    x = 766.40

Related Problems

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Half scale
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Double scale
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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.