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Finding the Fourth Proportional to 1,392.32, 2,088.60 and 526.64

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Solution

The fourth proportional to 1,392.32, 2,088.60 and 526.64 is: 790.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.32 : 2,088.60 = 526.64 : x
  2. Step 2: Convert to fraction form
    1,392.32/2,088.60 = 526.64/x
  3. Step 3: Cross multiply
    1,392.32x = 2,088.60 × 526.64
  4. Step 4: Simplify right side
    1,392.32x = 1,099,940.30
  5. Step 5: Solve for x
    x = 1,099,940.30/1,392.32
  6. Step 6: Final answer
    x = 790.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.