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Finding the Fourth Proportional to 1,556.69, 2,335.08 and 777.05

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Solution

The fourth proportional to 1,556.69, 2,335.08 and 777.05 is: 1,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.69 : 2,335.08 = 777.05 : x
  2. Step 2: Convert to fraction form
    1,556.69/2,335.08 = 777.05/x
  3. Step 3: Cross multiply
    1,556.69x = 2,335.08 × 777.05
  4. Step 4: Simplify right side
    1,556.69x = 1,814,473.91
  5. Step 5: Solve for x
    x = 1,814,473.91/1,556.69
  6. Step 6: Final answer
    x = 1,165.60

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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.